$ git clone -n https://src.fedoraproject.org/rpms/rust-sval_buffer.git /var/lib/mock/f38-build-side-42-init-devel-1138990-30408/root/chroot_tmpdir/scmroot/rust-sval_buffer
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1138990-30408/root/chroot_tmpdir/scmroot/rust-sval_buffer'...
$ git fetch origin 875b419da3aac199348132e70daa4e0ac3606446:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sval_buffer
 * [new ref]         875b419da3aac199348132e70daa4e0ac3606446 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 875b419 Initial import (#2217037)